Modernize AboutFragment Using Jetpack Compose

[shamim-emon]

The AboutFragment currently uses an XML-based layout for rendering its UI. As part of our ongoing modernization effort and gradual migration toward Jetpack Compose, this issue proposes replacing the existing XML layout with a fully Compose-based UI.

Migrating this screen will help reduce UI boilerplate, improve readability, and align the codebase with modern Android UI development practices already adopted in other parts of the project.

🎯 Goals

• Remove XML layout usage from AboutFragment.
• Implement the UI using Jetpack Compose.
• Use MVI in AboutFragment.
• Ensure no regression in functionality.